The AmeriGlo GL491 sight set bridges the gap between traditional iron sights and modern optics mounting systems on Glock pistols. This 3XL height configuration provides absolute co-witness with popular red dot optics while maintaining full functionality as standalone backup iron sights.
What Makes This Different
The GL491 features a significantly taller profile than standard Glock sights, specifically engineered for pistols equipped with slide-mounted optics. The green tritium front sight maintains visibility in low-light conditions for up to 12 years, while the white outline enhances contrast in daylight shooting. Unlike basic suppressor-height sights, this set maintains proper sight picture geometry even with the added height.
Key Features
- Green tritium front sight with white outline for 24-hour visibility
- 3XL height profile provides absolute co-witness with slide-mounted optics
- Machined steel construction with nitride finish for corrosion resistance
- Compatible with all Glock models using standard sight cuts
- Black rear sight eliminates distracting glare during target acquisition
- Precise .125-inch front sight width for accurate shot placement
- Drop-in installation requires no permanent modifications to slide
Field testing demonstrates reliable tritium performance across temperature extremes from -20°F to 120°F. The sight set maintains zero through thousands of rounds while providing consistent sight picture for competitive shooting, duty carry, and home defense applications. The white outline front sight offers enhanced visibility against varied target backgrounds compared to plain tritium dots.
Technical Specs
- Front sight height: 3XL profile (.394 inches)
- Tritium color: Green with white outline
- Rear sight: Black serrated face
- Material: Machined steel with nitride coating
- Compatibility: All Glock pistols with standard sight dovetails
- Tritium lifespan: 12+ years
- Installation: Standard sight pusher tool required
- Manufacturer: AmeriGlo USA
The GL491 sight set delivers the reliability shooters expect from AmeriGlo's proven designs while adapting to modern optics-ready pistol configurations. Professional gunsmiths stock this model specifically for customers upgrading to slide-mounted red dots who want dependable backup sights.